Tsarin Austenitic Na Alloy

Austenite muhimmin tsari ne na kristal da ake samu a cikin ƙarfe da sauran ƙarfe na ƙarfe{0}, wanda aka sani don tsananin tauri da robobi. Austenite yana da tsarin fuska -tsakiyar cubic (FCC), tare da atom ɗin ƙarfe waɗanda ke kusa da cibiyoyi da wuraren fuskar kube, kuma carbon ko wasu abubuwan haɗakarwa na iya zama da ƙarfi{3}} a cikin tsaka-tsaki.

 

Austenite shine microstructure na gami. Yana buƙatar cika sharuɗɗa guda biyu:

1. Tsarin lu'ulu'u na gami shine tsarin fuska{1}}tsari mai siffar cubic (FCC).

2. Alloy shine m bayani.

 

Austenite yana da sifofin filastik mai kyau, ƙarancin haɓakar haɓakar zafi, da kyakkyawan aikin zafi mai girma{{0}. Kusan duk bakin karfe na gama gari da manyan gawawwakin zafin jiki na austenitic alloys.

 

A cikin aikace-aikacen aikace-aikacen, kyakkyawan filastik na austenitic alloys yana ba su damar yin aiki da ƙarfi na dogon lokaci a cikin kewayon zafin jiki mai faɗi, wanda shine dalilin da ya sa mafi yawan amfani da baƙin ƙarfe duk su ne bakin ƙarfe na austenitic.

 

Wani muhimmin sifa na austenitic alloys shine mafi kyawun aikinsu na zafi{0}. A yanayin zafi mai girma, fuskar mai siffar siffar siffar siffar siffar siffar siffar siffar siffar siffar siffar siffar siffar siffar siffar siffar siffar siffar siffar siffar siffar siffar siffar siffar siffar siffar siffar siffar siffar ) zai iya kiyaye mafi kyaun kwanciyar hankali, don haka tabbatar da ƙarfin austenitic gami a babban yanayin zafi. Wannan shine dalilin da ya sa kusan dukkanin manyan gawawwakin zafin jiki{4}} alloys ne na austenitic.

 

Don haka menene ya ƙayyade ko alloy yana da tsarin austenitic?

Yanzu, mun san cewa austenitic alloys suna buƙatar samun tsarin fuska{0}}tsari mai siffar cubic (FCC). Don haka, muna buƙatar ƙara fahimtar abubuwan ƙarfe waɗanda ke da tsarin FCC.

Ƙarfe mafi yawanci shine ƙarfe, kuma ƙarfen ƙarfe yana da tsarin FCC. Abin takaici, baƙin ƙarfe yana da kaddarorin allotropy. Wato baƙin ƙarfe zai iya kiyaye tsarin FCC ne kawai a cikin kewayon zafin jiki na digiri 912 zuwa digiri 1394. A wasu yanayin zafi, baƙin ƙarfe yana canzawa zuwa tsarin jiki{5}}tsararrun kubik (BCC).

A wannan gaba, muna buƙatar ƙarfe na gaggawa wanda zai iya ba da garantin tsarin FCC a kowane zafin jiki. Wannan sinadarin nickel ne. Muddin abun ciki na nickel na gami ya wuce 9%, ana iya kiyaye tsarin FCC. Saboda haka, kawai ƙara 9% ko fiye da nickel zuwa baƙin ƙarfe zai iya sa gami ya kula da tsarin austenitic a kowane zafin jiki. Wannan shine dalilin da ya sa duk bakin karfe da manyan gawawwakin zafin jiki{6}} sun ƙunshi nickel.